13 Problem 5 This Problem Compares The Energy Output And Heat Transfer To The Environment By Two Different Types Of 1 (111.71 KiB) Viewed 31 times
(13%) Problem 5: This problem compares the energy output and heat transfer to the environment by two different types of nuclear power stations- -one with the normal efficiency of 31 %, and another with an improved efficiency of 46 %. Suppose both have the same heat transfer into the engine in one day, 2.55 x 10¹4 J. 50% Part (a) How much more electrical energy is produced by the more efficient power station? W = || sin() cotan() cos() asin() tan() acos() 7 8 9 E ^^^ 4 5 6 50 π HOME Grade Summary Deductions Potential 1% 99% Submissions Attempts remaining: 13 10.07
(13%) Problem 8: Suppose 1.00 kg of water at 37.5° C is placed in contact with 1.00 kg of water at 20.5° C. 50% Part (a) What is the change in energy (in joules) of the hot water due to the heat transfer when it is placed in contact with the cold water and allowed to reach equilibrium? 2h 2h = -35580 ✓ Correct! = -35581 50% Part (b) What is the change in entropy in joules per kelvin due to this heat transfer? AS tot = Grade Summary Deductions Potential 0% 100%
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